ENGRAVINQS. -\ 



:-Vol. LIII. A Plate illustrative of Dr. Ure's Experiments on Galorlo, 

 r. Luckcock's Paper on the Atomic Philosophy, and Mr. Bolton's 

 the Purification of Coal Gas. — A Plate representing Mr. Rennie's 

 pparatus employed in his Experiments on the Strength of Materials; 

 d the Marquis RidOlphi's Improvement on the Gas Blow-pipe. — A 

 jte illustrative of Mr. Meikle's Paper on Calorific Radiation; Mr. 

 ow'e's on the Purification of Coal Gas; and Mr, Hughes's on ascer- 

 ining Distances. —.-A Plate illustrative of Dr. Olinthus Gregory's 

 iper on the different Rates of Pennington's Astronomical Clock at the 

 land of Balta, and at Woolwich Common. 



Vol. LIV. A Plate illustrative of the Menai Bridge.— A Plate illus- 

 ative of Mr. Lowe's Description of a Mercurial Pendulum. — A Plate 

 lustrative of Mr. Hare's Calorimotor,-a new Galvanic Instrument.— A 

 jlafe illustrative of Captain Sabine's Paper on Irregularities observed ii^ 



Ipe Direction of the Compass Needles of the Isabella and Alexander ia 

 late Voyage of Discovery; and Mr. Scoresby's Anomaly in the Va- 



?;^tion of the Magnetic Needle as observed on Ship-board. 



Vol. LV. A Plate exhibiting Skttch of the Comet's Path of July 1819. 



A Plate illustrative of the Annular Eclipse of the Sun on the 7th of 



.eptember next. — A Plate illustrative of Mr. Lane's Instrument for 



fathering Fruit; Mr. Young's Mode ci preparing Opium from the 



fyapaver somniferunt} and of Captain Forman's Essay on a Property in 



^^ight which hitherto has been unobserved by Philosophers, — A Plate de- 



icriptiveof Mr. Cuthbert's improved Hydro-pneumatic Apparatus, Sec, 



I— A Plate illustrative of Capt. Forman's Essay on the Ref.t^ction, Refrac- 



ion, and Inflection of Light, &c. ; and Mr. Charlbs Bonnvcastle's 



i^ommunicacion respecting the Influence of Masses of Iron on the Mari- 



ler's Compass, 



Vol. LVI. A Plate illustrative of Mrs. Ibbetson's Paper on the Phy, 



^iology of Botany.— A Plate illustrative of Mr. Hall's Percussion Gun- 



!"Lock; of Dr. Kitchiner's Pancratic Eye-Tube ; and of Mr. Park's 

 Mooring Blocks.— A Plate exhibiting Sections, &c. of Mr. Malam's im- 

 proved Gas-Meter. — A Plate exhibiting the Discoveries made by Capt. 

 r/PRY in the Polar Sea. 



\ OL. LVII. A Plate illustrative of Mess. a2RSTED and Ampere's 

 i-ltciro-magnelic Experiments, and Mr. Perkins's Paper on the Com, 

 pressibility of Water.— tA Plate illustrative of Mr. Jamieson's Marine 

 Thermometer Case, and Mr. Jennings's Mercurial Log-Glass. — A Plate 

 illustrative of Dr. Hare's new Modification of Galvanic Apparatus. — A 

 Plate representing a Double Canal Lock, originally proposed for the Re- 

 gent's Canal, by Mr. R. H. Gower ; and a Modification of Electro-Mag- 

 etic Apparatus, by Mr. Tatum. 

 Vol. LVI II. A Plate illustrative of Mr. Geo. Innes's Calculations of 

 e Annular Eclipse of the Sun, which will happen on the l5ih of May 

 8.%.— A Plate descriptive of the Hydrostatic Balances of Isaiah 

 UK ENS and Dr. Coatks.— A Plate illustrative of" An Introduction to 

 the I^nowledgc of Funguses."— A Plate illustrative of Professor Daw's 

 Lactometer, and of Mr. John Murray's portable Appar.ttus lor restofT 

 ing the Action of the Lungs. 



r 



